Layered heat-proof protective clothing

Abstract

Layered heat-proof protective clothing includes a front fabric layer and a breathable waterproof interlayer and/or heat-shielding layer, the layered heat-proof protective clothing having a thickness of 2.5 mm or greater after 5 washings according to ISO 6330, and a time to temperature increase by 24° C. of 18 seconds or longer in the heat transfer test ISO 6942-2002 in European Approach A, Section 4 , according to ISO 11613, wherein the basis weight of the layered heat-proof protective clothing is 450±50 g/m 2 , and wherein the front fabric layer is composed of a double weave fabric, having a front side fabric and back side fabric whose TMA shrinkage factor difference at 400° C., with 150° C/min increase, is at least 4%, and the variation in thickness of the double weave fabric after 8 seconds of flame exposure from the front side fabric side following ISO 17492, TPP, being 2 mm or greater.

What is claimed is: 
     
       1. Layered heat-proof protective clothing comprising a front fabric layer, and a breathable waterproof interlayer and/or heat-shielding layer, the layered heat-proof protective clothing having a thickness of 2.5 mm or greater after 5 washings according to ISO 6330,and a time to temperature increase by 24° C. RHTI24 of 18 seconds or longer in a heat transfer radiant heat exposure test ISO 6942-2002 in European Approach A Section 4 according to ISO 11613,
 wherein the basis weight of the layered heat-proof protective clothing is 450±50g/m 2 , and 
 wherein the front fabric layer is composed of a double weave fabric, having a front side fabric and back side fabric whose TMA shrinkage factor difference at 400° C. 150° C/min increase is at least 4 %, and the variation in thickness of the double weave fabric after 8 seconds of flame exposure from the front side fabric side following ISO 17492 TPP being 2 mm or greater. 
 
     
     
       2. Layered heat-proof protective clothing according to  claim 1 , wherein the time to temperature increase by 24° C. HTI24 is 13 seconds or longer in a heat transfer flame exposure test ISO 9151 in European Approach A Section 4 according to ISO 11613. 
     
     
       3. The layered heat-proof protective clothing according to  claim 1 , which has a difference of at least 4 seconds between the time to temperature increase by 24° C. HTI24 and the time to temperature increase by 12° C. HTI12, in a heat transfer flame exposure test ISO 9151 in European Approach A Section 4 according to ISO 11613. 
     
     
       4. The layered heat-proof protective clothing according to  claim 1 , wherein the time to temperature increase by 24° C. TPP is at least 17.5seconds in a radiant heat +flame exposure test ISO 17492 in North American Approach B Section 5according to ISO 11613. 
     
     
       5. The layered heat-proof protective clothing according to  claim 1 , wherein the basis weight of the layered heat-proof protective clothing is 400 to-482 g/m 2 . 
     
     
       6. The layered heat-proof protective clothing according to  claim 1 , wherein the thickness of the heat-shielding layer is 1.80 mm or greater. 
     
     
       7. The layered heat-proof protective clothing according to  claim 1 , wherein the basis weight of the heat-shielding layer is 110 to 150 g/m 2 . 
     
     
       8. The layered heat-proof protective clothing according to  claim 1 , wherein the layered heat-proof protective clothing has a 2nd +3rd degree burn rate of no greater than 10% according to ISO 13506. 
     
     
       9. The layered heat-proof protective clothing according to  claim 1 , wherein the double weave fabric of the front fabric layer has higher cut resistance for the back side fabric than the front side fabric. 
     
     
       10. The layered heat-proof protective clothing according to  claim 1 , wherein the heat-shielding layer has a basis weight of 100 to 150 g/m 2 , and high-shrinkage fibers with a BWS of 10-50% are used at 2-20%. 
     
     
       11. The layered heat-proof protective clothing according to  claim 1 , wherein the heat-shielding layer is a fancy double weave fabric. 
     
     
       12. The layered heat-proof protective clothing according to  claim 2 , which has a difference of at least 4seconds between the time to temperature increase by 24° C. HTI24 and the time to temperature increase by 12° C. HTI12, in a heat transfer flame exposure test ISO 9151in European Approach A Section 4 according to ISO 11613.